Relief valve for ford oiling systems



J'uly22,1930. M. CHENEY 1,770,911

RELIEF VALVE FOR FORD OILING SYSTEMS Filed Jan. 1, 1929 gvwemtoz 351 ado 01401 1 'Mosns E1"Canvas s.m daesss; isconsin, Assignees? ransivn'nssrenivrnnrs';

TO MQTQ E ER GAU E fa "EQUIPMENT conPori ArIon; or none IsnANn my, Nnw

ianmnr VA VE non ronn orni vo'svsrnms' a Application. filed January i,

This invention relates to an" improvement s indicate little, if any movement of the pointer on other types of gauge, and in cold weather the pressurebecomes so great as to,

rupturea gauge of the low reading type.

. To overcome this difiiculty, a lowreading gauge has been mounted in conjunction with a desirable form of relief valve positio'nedat a point where the excessive pressure will open a valved connection to the valve chamber reservoir of themotor, whereby the oil will be pumped through part of the gauge passage to said reservoir instead of being pumped through the oil overflow pipe, found on Ford cars. In bringing about'this desirable result it is onlynecessary to remove twoplugs found on the Fordmotor, one at the inspection hole of the oil passage pipe and the other at one end of the oil return pipe. The

relief valve is preferably inserted at the point where the last mentioned plug is located. e

Other objects and advantages will be'in f part indicated in the following 'description and in part rendered apparent therefrom in connection with the annexed drawings.

To enable others skilled in the ,artso fully to apprehend the underlying features hereof that they may embody the same in the various ways contemplated by this invention, drawings depicting a preferred typicalcon, struction have been annexed as a part ofthis disclosure and, in such drawings, like characters of reference denote corresponding parts throughout all the views, of which 2- In the drawings Figure 1 is a side eleva v tion of a Ford motor wi th "the gauge con nections duly installed thereon; Fi .2 is a 1 detail view of the "relief valve. whi e-Fig. 3 "50 I is an end view thereof.

the point 1 the pluglcovering inspection holev inrthe oil pipe 2 is removed, the oil pump being located at 3. At this pipe is secured to the relief valve 6 (Fig.2) consisting of a T member having a passage ,7 with. a spring pressed ballivaflve 8. This passage isccontainjed in-va' lhollow cap screw L16 whichis?screw-th-readed and is capable of being screwed into the opening uncovered by theremoval of ,thecap screw or plug at pointI-l an elbow 4. is inserted,which is secured -to'one endof-the short pipe arm 5 of; the gauge passage; I The free endof said 7 the point 9 (Fig. 1); which is preferably at the upper endof-thejoil return pipe 10, it

being apparent thatwith' a longeripipe the Y relief valve couldbe positionedat the lower end ofsaid return pipe where a removable cap screw or plug is also located. Thepipe 1 1 .connects with said relief valve-Gas indi 'catedin'FigJ2 and thispipe 11 also connects owithithe gauge 12. Thespring l3 isset at a pressure 'sufliciently. low as to flcause; the

valve to remain closed thereby shutting. off

thepassage to the valve chamber reservoir 7 except when the pressure of the oil rises suf- .fici ently toIendanger thegauge'. [At such.

times thevalve opens and the oil is merely pumped through-passage 14, which is ex tended to the valve chamber reservoir 15,

where it flows in the lubricatingsystem withwith thenornial lubricating systemi Conseque ntly it isjnow apparent that the plugs are so located on a .Ford as to enable there? lief 'valveto be. inserted at a desirable place for, protecting the 1 gauge againstrrupture, while maintaining the lubrication in the valve-chamber reservoir up to the normal ,amount' even after the pressure of the oil 1" becomes so great asto endanger the-gauge.

. Without further-analysis; the foregoing will so fully: reveal vthe gist of thisinvention that others can by applying current'knowledge," readily adapt it. for .various utilizationsi by retaining one .or more of the features that,- fromthe standpoint ofthe prior an, fairlyconstitute essentialv characteristics 'ofk'eitherthe generic or "specific aspects of this-invention. and, therefore, su'chf adapter of equivalency of the following claims tions should be, and are intended to be, comprehended Within the meaning and range Having thus revealed this invention, I claim as'nevv and desire to secure the follow-. ing combinations and elements, or equivalents thereof, by Letters Patent of United: States: v V a i '1. Ina motor vehicle characterized as having a lubricating system, a. p'ump',a valve chamber reservoir, a passage from said pump to said reservoir, a mainoil receptacle, a return pipe extending from a fpoint near the top of said valve chamber reservoir to 'the main oil receptacle thereof and a gauge of a W reading pressure type positioned near one end of the lubricating system, the cornbi nation of a spring pressure relief valv'e'with connecting devices extending from said valve to said pump and pressure gauge thevalve being positioned near one end of said return pipe and intermediate of the gauge and pump, and connections from said valve to t-inuously' open passage is formed between said low pressure gauge and said pump, the spring of said relief valve being set to close thevalve connection to said reservoir except when the pressure ofthelubricating system exceeds the low pressure suitable for the gauge, thereby by-Lpassing thelubri'cantto the reservoir in order to maintain the lubrito said pump, the valve being positioned near one end of said return pipe and intermediate ofthe' gaugeand pump, a passage from said pump to said valve" cnamber reservolr normally closed by said valve but capable of being opened Whenever the pressure of said lubricating system exceeds said predetermined low pressure, thereby forming an additional passage from the pump to said valve chamber reservoir, during abnormal pressure conditions ofsa'id lubricating system.

3. Ina vehicle motor'characterized as having a'lubricant'reservoir in its base'ya valve chamber above said reservoir a continuous- 1y acting pump and a suitable conduit; to transport lubricant from said reservoirii nto said valve chamber, saidv conduit being formed with an inspection openingland a return pipe connecting said valve chamber withfsai'd reservoir said "return pipe being provided with plugged openings, the combination ofa low pressure gauge located remote from said motor; a lubricant pipe connected at one end to said pressure gauge and coupled-at its other end into saidinspection opening; a pressure relief valve embodied in said pipe said relief valve having a portion 7 comprising an overflowlinethreaded into one'of saidt pl'ugg'ed o en ngs." V

In wltness whereof, Ighave lierei'lnto subscribed my name.

7 I 7 Moses n. CHENEY. 

